3com 5500-ei pwr Instruccion De Instalación

 

9 

Configure the maximum 
response time of IGMP general 
queries 

igmp max-response-time 
seconds 

Optional 

10 seconds by default. 

 

By configuring the maximum number of IGMP multicast groups allowed to be joined on an interface of 

the switch, you can control the number of programs on demand available for users attached to the 

interface, thus to control the bandwidth usage on the interface.  

Follow these steps to configure the maximum number of multicast groups allowed on an interface: 

Enter system view 

— 

Enter interface view 

interface interface-type 
interface-number 

— 

Configure the maximum 
number of multicast groups 
allowed on the interface 

igmp group-limit limit 

Required 

The default is 256. 

 

z 

After the maximum number of multicast groups is reached, the interface will not join any new 

multicast group.  

z 

If you configure the maximum number of multicast groups allowed on the interface to 1, a new 

group registered on the interface supersedes the existing one automatically.  

z 

If the number of existing multicast groups is larger than the configured limit on the number of joined 

multicast groups on the interface, the device will remove the oldest entries automatically until the 

number of multicast groups on the interface conforms to the configured limit.  

 

A multicast router determines the group memberships in the specified subnet by analyzing the received 

IGMP reports. To restrict the hosts on the network attached to an interface from joining certain multicast 

groups, you can apply an ACL rule on the interface as a group filter that limits the range of multicast 

groups that the interface serves. 

You can: 

z 

Configure the range of multicast groups that the current interface will work for in interface view. 

z 

Configure the range of multicast groups that the interface corresponding to the VLAN where the 

current port resides will work for in Ethernet port view.  

Follow these steps to configure a multicast group filter in VLAN interface view: